CN109138898A - A kind of shear ram based on cumulative charge - Google Patents
A kind of shear ram based on cumulative charge Download PDFInfo
- Publication number
- CN109138898A CN109138898A CN201811238473.XA CN201811238473A CN109138898A CN 109138898 A CN109138898 A CN 109138898A CN 201811238473 A CN201811238473 A CN 201811238473A CN 109138898 A CN109138898 A CN 109138898A
- Authority
- CN
- China
- Prior art keywords
- shell
- explosive
- shear ram
- cumulative charge
- shear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001186 cumulative effect Effects 0.000 title claims abstract description 34
- 239000002360 explosive Substances 0.000 claims abstract description 45
- 238000005553 drilling Methods 0.000 claims abstract description 26
- 239000011241 protective layer Substances 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 9
- 230000037452 priming Effects 0.000 claims description 7
- 238000010008 shearing Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 5
- 238000005242 forging Methods 0.000 claims description 5
- 238000005474 detonation Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000012876 topography Methods 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims 1
- 239000003814 drug Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
- E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams
- E21B33/062—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams
- E21B33/063—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams for shearing drill pipes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The present invention provides a kind of shear ram based on cumulative charge, belong to the key equipment of the Drilling Control in ocean engineering field, shear ram is applied on the well control device of offshore oil drilling well workover, mainly by flashboard shell, energy gathering cap, explosive, waterproof protective layer, fastener and amplitude transformer shell composition, this flashboard is mounted in preventer, when generation emergency needs to shear drilling rod, blowout preventer hydraulic movement pushes flashboard to hold drilling tool tightly, at this moment energy gathering cap is pressed on surface of drill stem, ignition charge, the instantaneous pressure compressing energy gathering cap generated by explosive charge generates metal jet, cut off drilling tool, full envelope preventer shut-in well is closed later.
Description
Technical field
The present invention relates to a kind of shear rams of ocean engineering field, are based on CUMULATIVE BLASTING especially with regard to one kind
The shear ram of cutting.
Background technique
Ram preventer (BOP) is most important well-control equipment during oil exploitation drilling and well completion, ram preventer
Main feature: first is that ram seal ability is strong and reliability is high, it is high pressure resistant, closing well can be kept closed for a long time
Mouthful；Second is that the flashboard for closing various specifications type drilling rod, casing, oil pipe can be equipped in preventer, it can also be equipped with and close empty well
Blind rams, and it is equipped with the shear ram for cutting drilling rod in an emergency situation.
Shear ram preventer is a seed type of ram preventer, it is mainly used in the operation process such as drilling well and well workover
In emergency, it is necessary to the shear ram for closing preventer cuts well mouth drill column, then with full envelope preventer closing well head.
Existing ram preventer shearing force is insufficient, can only cut common drilling rod under the limited conditions, and for special drilling tool,
Such as tool joint, drill collar, heavy weight drill pipe even cannot be guaranteed to cut using more and more high-strength drill pipes etc. later, in addition right
In having occurred and that the drilling tool of deformation or offset not can guarantee shearing yet, industry is to high-performance, high reliablity shear ram blowout prevention
Device is in urgent need.
Summary of the invention
The present invention is intended to provide a kind of shear ram based on cumulative charge.
To realize the above-mentioned technical purpose, the present invention uses following technical scheme, a kind of blowout prevention based on cumulative charge
Device shear ram, including a shear ram shell, shear ram enclosure interior setting one is for installing cumulative charge device simultaneously
As the cavity in the gas expansion space after explosion, cumulative charge device is equipped in cavity, cutter includes being mounted on shell
Interior energy gathering cap, explosive, waterproof protective layer, priming device and explosive shell, shell is integrally packed into shear ram shell, in cumulative
Cut blasting device shell is equipped with several bolts hole, and through-hole corresponding with bolt hole is equipped on shear ram shell, uses spiral shell
Bolt passes through through-hole and bolt hole is tightened and cumulative charge device shell is fixed in shear ram shell, and the explosive fills
In explosive shell, the explosive shell is semicircle circular tube shaped, and the outside of topographies drilling tool, explosive shell is covered with energy gathering cap,
The mouth that explosive shell fills in explosive is sealed by waterproof protective layer, and waterproof protective layer is fixed on explosive shell by high viscosity marine glue
On, priming device is mounted on the outside of explosive shell and is connected with explosive, and cumulative charge device inner walls are equipped with pack
Fastener clamps energy gathering cap and explosive shell.
Preferably, the shear ram rear is connected with blowout preventer piston bar.
Preferably, remote-controlled detonation can be used in the cumulative shear ram, can also be ignited using conducting wire.
Preferably, shear ram shell is made of metal forging or casting.
The shear ram novelty that the present invention designs uses cumulative charge principle, cuts compared to traditional shearing
It cuts, cutting speed is fast, good reliability, very big hydraulic pressure is not needed, when needing shear ram operation in operation process,
There is provided pressure by blowout preventer hydraulic system pushes shear ram to hold drilling rod tightly, then ignition charge, the immense pressure that explosive generates
It squeezes energy gathering cap and generates metal jet, cut off drilling tool, shear ram shell is made of metal forging or casting, can be used
Under well head pressure no more than 25000Psi, and impact force caused by explosive charge can be born, cumulative charge device can be with
Entirety is safeguarded and is replaced, and energy gathering cap, explosive and protective layer are only replaced after can also cutting every time；Cumulative charge
Speed is fast, high reliablity, is conducive to generation emergency and cuts drilling tool shut-in well rapidly, cutting consumables are at low cost, use this lock
Plate does not have to change whole preventer structure, only needs to change flashboard, is able to solve existing shear ram preventer shear ability not
The problem of foot can satisfy on the water and the requirement in underwater various drilling and repairing well operations, since a variety of ignition sides can be used
Formula, can flexible design according to actual needs, the present invention changes the cut mode of traditional preventer from principle, but does not change substantially
Become the structure of original preventer, can be compatible with traditional preventer, and reduce the size of tradition shearing preventer and hydraulic want
It asks.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the block diagram of the embodiment of the present invention；
Fig. 3 is the internal view of the embodiment of the present invention.
In figure: 1, energy gathering cap；2, waterproof protective layer；3, explosive；4, explosive shell；5, priming device；6, CUMULATIVE BLASTING is cut
Cutter shell；7, bolt hole；8, through-hole；9, bolt；10, shear ram shell；11, cumulative charge device；12, fixing piece.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, unless otherwise specified and limited, it should be noted that term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
It, can also be indirectly connected through an intermediary to be to be connected directly.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term.
As shown in Figure 1 to Figure 3, a kind of shear ram based on cumulative charge, including a shear ram shell
Body 10, inside shear ram shell 10 setting one for cumulative charge device 11 is installed and as the gas expansion after explosion it is empty
Between cavity, be equipped with cumulative charge device 11 in cavity, cutter 11 include the energy gathering cap 1 being mounted in shell 6, explosive 3,
Waterproof protective layer 2, priming device 5 and explosive shell 4, shell 6 is whole to be packed into shear ram shell 10, in cumulative charge device
Shell 6 is equipped with several bolts hole 7, and through-hole 8 corresponding with bolt hole 7 is equipped on shear ram shell 10, is worn with bolt 9
It crosses through-hole 8 and bolt hole 7 is tightened and cumulative charge device shell 6 is fixed in shear ram shell 10, the explosive 3 fills
In explosive shell 4, the explosive shell 4 is semicircle circular tube shaped, and topographies drilling tool, the outside of explosive shell 4 is covered with poly-
1 can be covered, the mouth that explosive shell 4 fills in explosive is sealed by waterproof protective layer 2, and waterproof protective layer 2 is fixed by high viscosity marine glue
On explosive shell 4, priming device 5 is mounted on the outside of explosive shell 4 and is connected with explosive 3, cumulative charge device shell 6
Inner wall is equipped with pack fastener 12 and clamps energy gathering cap 1 and explosive shell 4.
Preferably, 10 rear portion of shear ram shell is connected with blowout preventer piston bar.
Preferably, remote-controlled detonation can be used in the cumulative shear ram, can also be ignited using conducting wire.
Preferably, shear ram shell 10 is made of metal forging or casting.
In this embodiment, two pieces of shear rams are used cooperatively drilling tool is clipped in, when preventer acts
When hydraulic drive blowout preventer piston, from preventer piston rod push two sides flashboard to centre hold tightly drilling tool, then pass through
Quick-fried device ignition charge generates the immense pressure compressing energy gathering cap of moment, generates metal jet, cut off drilling tool.
The shear ram novelty that the present invention designs uses cumulative charge principle, cuts compared to traditional shearing
It cuts, cutting speed is fast, good reliability, very big hydraulic pressure is not needed, when needing shear ram operation in operation process,
There is provided pressure by blowout preventer hydraulic system pushes shear ram to hold drilling rod tightly, then ignition charge, the immense pressure that explosive generates
It squeezes energy gathering cap and generates metal jet, cut off drilling tool, shear ram shell is made of metal forging or casting, can be used
Under well head pressure no more than 25000Psi, and impact force caused by explosive charge can be born, cumulative charge device can be with
Entirety is safeguarded and is replaced, and energy gathering cap, explosive and protective layer are only replaced after can also cutting every time；Cumulative charge
Speed is fast, high reliablity, is conducive to generation emergency and cuts drilling tool shut-in well rapidly, cutting consumables are at low cost, use this lock
Plate does not have to change whole preventer structure, only needs to change flashboard, is able to solve existing shear ram preventer shear ability not
The problem of foot can satisfy on the water and the requirement in underwater various drilling and repairing well operations, since a variety of ignition sides can be used
Formula, can flexible design according to actual needs, the present invention changes the cut mode of traditional preventer from principle, but does not change substantially
Become the structure of original preventer, can be compatible with traditional preventer, and reduce the size of tradition shearing preventer and hydraulic want
It asks.
In the description of this specification, the description meaning of reference term " one embodiment ", " example " or " some examples " etc.
Refer to that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least one reality of the invention
It applies in example or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or show
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples
It can be combined in any suitable manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (4)
1. a kind of shear ram based on cumulative charge, including a shear ram shell, which is characterized in that shearing
Flashboard enclosure interior setting one is for installing cumulative charge device and the cavity as the gas expansion space after explosion, cavity
Interior to be equipped with cumulative charge device, cutter includes being mounted on the intracorporal energy gathering cap of shell, explosive, waterproof protective layer, priming device
With explosive shell, shell is integrally packed into shear ram shell, several bolts hole are equipped on cumulative charge device shell,
Shear ram shell is equipped with through-hole corresponding with bolt hole, passes through through-hole with bolt and bolt hole is tightened cumulative charge
Device shell is fixed in shear ram shell, and the explosive fills in explosive shell, and the explosive shell is semicircle circular tube shaped,
Its topographies drilling tool, the outside of explosive shell are covered with energy gathering cap, and the mouth that explosive shell fills in explosive is sealed by waterproof protective layer,
Waterproof protective layer is fixed on explosive shell by high viscosity marine glue, priming device be mounted on the outside of explosive shell and with it is fried
Medicine is connected, and cumulative charge device inner walls are equipped with pack fastener and clamp energy gathering cap and explosive shell.
2. shear ram according to claim 1, which is characterized in that the shear ram rear and blowout preventer piston
Bar is connected.
3. shear ram according to claim 1, which is characterized in that remote-controlled detonation can be used in the cumulative shear ram,
It can also be ignited using conducting wire.
4. shear ram according to claim 1, which is characterized in that shear ram shell is by metal forging or casting system
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238473.XA CN109138898A (en) | 2018-10-23 | 2018-10-23 | A kind of shear ram based on cumulative charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238473.XA CN109138898A (en) | 2018-10-23 | 2018-10-23 | A kind of shear ram based on cumulative charge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109138898A true CN109138898A (en) | 2019-01-04 |
Family
ID=64809193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811238473.XA Pending CN109138898A (en) | 2018-10-23 | 2018-10-23 | A kind of shear ram based on cumulative charge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109138898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021045985A1 (en) * | 2019-09-04 | 2021-03-11 | Kinetic Pressure Control, Ltd. | Kinetic shear ram cutters for well control apparatus |
| CN114458188A (en) * | 2022-01-14 | 2022-05-10 | 四川宝石机械钻采设备有限责任公司 | Cutting flashboard for belt press working machine |
-
2018
- 2018-10-23 CN CN201811238473.XA patent/CN109138898A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021045985A1 (en) * | 2019-09-04 | 2021-03-11 | Kinetic Pressure Control, Ltd. | Kinetic shear ram cutters for well control apparatus |
| CN114458188A (en) * | 2022-01-14 | 2022-05-10 | 四川宝石机械钻采设备有限责任公司 | Cutting flashboard for belt press working machine |
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